Spiraea crenata

About

Spiraea crenata, the scalloped spirea, is a species of flowering plant in the family Rosaceae. It is native to northeastern Spain, southeastern Europe, parts of Russia, southwestern Siberia, northwestern Kazakhstan, and the Altai, and has gone extinct in Hungary. A deciduous shrub reaching 0.6 to 1.2 m, it is found growing in chalky mountainous areas on slopes and in scrublands. A low-maintenance ornamental, it is hardy in USDA Zones 4 through 8, and prefers full sun.

Summary from Wikipedia